Is there a string formatting operator in R similar to Python's %?

Question

I have a url that I need to send a request to using date variables. The https address takes the date variables. I\'d like to assign the dates to the address string using somethi

Answer 1

The equivalent in R is sprintf:

year = "2008"
mnth = "1"
day = "31"
url = sprintf("https:.../KBOS/%s/%s/%s/DailyHistory.html", year, mnth, day)
#[1] "https:.../KBOS/2008/1/31/DailyHistory.html"

Also, although I think it is an overkill, you could define an operator yourself too.

`%--%` <- function(x, y) {

  do.call(sprintf, c(list(x), y))

}

"https:.../KBOS/%s/%s/%s/DailyHistory.html" %--% c(year, mnth, day)
#[1] "https:.../KBOS/2008/1/31/DailyHistory.html"